Question

A 20.0- projectile is fired at an angle of 60.0
above the horizontal with a speed of 80.0 . At the highest point of its trajectory,
theprojectile explodes into two fragments with equal mass, one
ofwhich falls vertically with zero initial speed. You can ignore
airresistance.

( How far from the point of
firingdoes the other fragment strike if the terrain is level?
)
d = 849m